Joints in Concrete Construction [ACI 224]
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Engineering (Ebooks)
ACI 224-3R-95
Joints in Concrete Construction
By : American Concrete Institute Committee 224
Joints in Concrete Construction
By : American Concrete Institute Committee 224
Joints are necessary in concrete structures for a variety of reasons. Not all concrete in a given structure can be placed continuously, so there are construction joints that allow for work to be resumed after a period of time. Since concrete undergoes volume changes, principally related to shrinkage and temperature changes, it can be desirable to provide joints and thus relieve tensile or compressive stresses that would be induced in the structure. Alternately, the effect of volume changes can be considered just as other load effects are considered in building design. Various concrete structural elements are supported differently and independently, yet meet and match for functional and architectural reasons. In this case, compatibility of deformation is important, and joints may be required to isolate various members.
http://rapidshare.com/files/120039135/ACI-224-95.pdf
